Will adding seaweed to my garden bed affect the well water below it?

Question:

I would like to cover a garden bed with seaweed. My well is under this bed. Will my water be affected by this? 

Answer:

Jonathan Foster, Special Project Assistant

Seaweed is an excellent amendment for garden beds, with many benefits and advantages over other fertilizers and mulches (please see this entry by my colleague Liz Stanley in the Maine Home Garden News). It is 100% biodegradable and shouldn’t affect your well water below, as it’s essentially the same as any other plant material you currently have growing there.